Dennis visits the North Hollywood home of his old friend, choreographer Fred Tallaksen, to talk about his two Emmy nominations, teaching Madonna to rollerskate for her "Sorry" video ("She smelled great"), bringing laser-ography to Jennifer Lopez's stage shows and taking an elbow to the face on the set of "Modern Family." Fred opens up about his transition from performer to choreographer, the Mountain Dew commercial that changed the game for him and the huge movie gig he landed by stealing a look at the storyboards before his interview. Other topics include: his obsession with the movie "Running with Scissors," choreographing Gwyneth and the Muppets at the Grammys, making Brian Cranston's "Dance Revolution" dreams come true, choreographing a flash mob for "The Price Is Right," doubling for Mike Myers on "Austin Powers: Goldmember," telling millennial dancers to put their phones away, working with Bea Arthur on "Malcolm in the Middle" and more. www.fredtallaksen.com